Average scale scores for grade 8 U.S. history, by all students and jurisdiction: 2010, 2006, 2001, and 1994
Year	Jurisdiction	All students
Year	Jurisdiction	Average scale score	Standard Error
NOTE: The NAEP U.S. History scale ranges from 0 to 500. Some apparent differences between estimates may not be statistically significant. Analyze results with NAEP Data Explorer. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 1994, 2001, 2006, and 2010 U.S. History Assessments.
2010	National	266	(0.8)
2006	National	263	(0.8)
2001	National	260	(0.8)
2001¹	National	262	(0.8)
1994¹	National	259	(0.6)